MANUAL Location - Area: Frignano , magnitude (ML): 1.1
2025-05-03 17:15:49 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-05-04 09:15:56

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Earthquake info - Manual location
Event - ID :250503171522
Magnitude (ML) :1.1 +/- 0.2
Origin Time :2025-05-03 17:15:49.066 (UTC)
Location : Latitude: 44.265 N, Longitude: 10.480 E
Area :Frignano
Depth (km) :10.46
Distances (km) : 8.2 --- Frassinoro
11.2 --- Villa Minozzo
12.3 --- Ligonchio
12.8 --- Pievepelago
13.4 --- Villa Collemandina
13.9 --- Castiglione di Garfagnana
14.1 --- Toano
14.3 --- Riolunato
14.8 --- Sillano
14.8 --- Palagano
14.9 --- San Romano in Garfagnana
15.2 --- Montefiorino
15.6 --- Pieve Fosciana
16.4 --- Fiumalbo
16.4 --- Camporgiano
16.5 --- Fosciandora
16.9 --- Piazza al Serchio
17.0 --- Busana
18.0 --- Castelnuovo di Garfagnana
18.6 --- Collagna

Quality location estimate: Erh: 1.8 km, Erz: 1.3 km, Nf: 33, Gap: 60 °, Rms: 0.20


Manual location results
Station Net P arrival time P pick
err		 P pick
weight		 P res Nll
weight		 S arrival time S pick
err		 S pick
weight		 S res Nll
weight		 Dist.
SARMGU2025-05-03 17:15:52.1100.01200.051.782025-05-03 17:15:54.2300.0842-0.071.6415.9
GSCLGU2025-05-03 17:15:51.4300.0080-1.460.062025-05-03 17:15:53.0800.0400-2.640.0017.0
VLCMN2025-05-03 17:15:52.6700.01300.280.662025-05-03 17:15:54.8470.0400-0.021.9317.8
ERBMIV2025-05-03 17:15:52.3900.0100-1.330.07--:---.-----.---.-- 20.8
BDIIV2025-05-03 17:15:54.0500.0170-0.081.662025-05-03 17:15:57.8100.0802-0.101.4726.9
CARDGU2025-05-03 17:15:54.4900.01800.180.852025-05-03 17:15:58.6200.19550.410.7328.7
FIVIGU2025-05-03 17:15:54.5860.02000.021.942025-05-03 17:15:58.9980.04000.440.6330.2
POPMGU2025-05-03 17:15:55.5100.01900.001.962025-05-03 17:16:00.5820.13640.251.0534.8
CMEIT2025-05-03 17:15:56.1460.02000.051.762025-05-03 17:16:01.8190.04000.530.4938.9
MAIMGU2025-05-03 17:15:56.3600.0241-0.001.912025-05-03 17:16:01.9600.13540.171.2240.6
AULIT2025-05-03 17:15:56.6550.0200-0.061.792025-05-03 17:16:01.8220.0400-0.370.4842.1
ZCCAIV2025-05-03 17:15:58.4100.01900.500.542025-05-03 17:16:06.0120.04001.450.0042.2
GRAMGU2025-05-03 17:15:56.8100.0462-0.041.782025-05-03 17:16:02.9000.13030.480.5942.9
PLMAIV2025-05-03 17:15:58.8570.0200-0.250.742025-05-03 17:16:06.6570.04000.290.9556.3
PIIIV2025-05-03 17:15:59.9000.0341-0.300.622025-05-03 17:16:07.7470.2406-0.610.3661.4
SEIIV2025-05-03 17:16:02.1240.0200-0.630.182025-05-03 17:16:12.4900.3277-0.650.4074.7
MSSAIV2025-05-03 17:16:02.7840.02000.011.592025-05-03 17:16:12.6140.0400-0.121.1777.6


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.		 Dist. (km) Azimuth
SARM GUEH0.853.41e-115.9215
GSCL GUHH1.681.70e+017.042
VLC MNHH0.761.34e-117.8212
BDI IVHH1.132.58e-126.9157
CARD GUHH1.262.48e-128.7180
FIVI GUHN1.131.64e-130.2264
POPM GUHH1.102.42e-134.8138
CME ITHN0.977.09e-238.9202
MAIM GUHH0.975.82e-240.6179
ZCCA IVHH1.231.08e-142.276
GRAM GUHH1.231.90e-142.9308
PLMA IVHH1.023.68e-256.3245
PII IVHH1.255.27e-261.4177
SEI IVHH1.506.11e-274.7108
MSSA IVHH0.871.32e-277.6275


Results of PGA, PGV, IH, spectral amplitudes (SA) values calculation
Station Net Channel PGA
(g)		 PGV
(m/s)		 IH 0*
(m)		 IH 1*
(m)		 IH 2*
(m)		 Sa(T=0.10)
(g)		 Sa(T=0.30)
(g)		 Sa(T=1.00)
(g)		 Sa(T=3.00)
(g)		 Dist.
(km)		 Azim.
(°)
SARM GUEHZ5.8689e-58.1129e-61.8855e-68.0880e-74.3469e-75.3836e-58.5989e-65.7451e-79.3948e-815.9215
SARM GUEHN4.8793e-55.9144e-62.8315e-61.2879e-65.5759e-76.6672e-51.1661e-57.7614e-71.6043e-715.9215
SARM GUEHE4.3318e-54.7523e-61.7196e-68.1267e-73.8216e-72.9997e-58.0760e-65.9348e-78.7178e-815.9215
GSCL GUHHZ2.2216e-54.7335e-63.1483e-61.9273e-61.2548e-65.2136e-51.5576e-51.4537e-61.0910e-717.042
GSCL GUHHN9.8161e-51.8961e-51.2605e-55.1878e-63.2475e-61.9772e-45.7133e-54.6944e-65.9287e-717.042
GSCL GUHHE5.2357e-51.2920e-58.0001e-62.7615e-61.4724e-61.1726e-43.6792e-52.1941e-63.3398e-717.042
VLC MNHHZ3.6999e-54.3231e-61.1188e-64.3779e-73.5187e-73.3337e-54.5329e-65.6766e-75.6227e-817.8212
VLC MNHHN4.1055e-54.0160e-61.2527e-64.1274e-71.9434e-74.4035e-56.1548e-62.8385e-75.3856e-817.8212
VLC MNHHE3.6837e-52.7829e-68.2367e-72.4298e-71.1746e-72.9784e-53.6559e-61.9515e-74.3966e-817.8212
BDI IVHHZ1.9647e-52.0280e-61.0343e-64.2283e-72.3189e-74.9117e-55.3370e-63.5104e-74.8210e-826.9157
BDI IVHHN2.4105e-54.4838e-62.3789e-67.8312e-73.3826e-75.4454e-51.6347e-55.1323e-79.1358e-826.9157
BDI IVHHE2.0009e-53.1143e-61.5049e-64.8703e-72.2781e-76.6253e-56.0017e-63.5115e-76.6708e-826.9157
CARD GUHHZ2.2672e-52.1004e-68.3874e-72.4969e-71.5578e-74.2562e-54.4212e-62.3935e-74.3571e-828.7180
CARD GUHHN4.2729e-55.0216e-61.6887e-63.6077e-72.3067e-77.2510e-56.3849e-64.4300e-71.0821e-728.7180
CARD GUHHE2.9046e-55.0206e-62.1089e-64.9282e-72.6491e-71.1049e-47.0763e-64.6490e-71.0681e-728.7180
FIVI GUHNZ2.5924e-53.4630e-61.3102e-64.1558e-72.0604e-76.1439e-53.5440e-63.2416e-77.6526e-830.2264
FIVI GUHNN1.4105e-52.2398e-61.4368e-65.0670e-72.6702e-72.8259e-56.6686e-64.4536e-76.0603e-830.2264
FIVI GUHNE1.3353e-52.7520e-61.7000e-63.8109e-72.0539e-74.6210e-58.5889e-63.0731e-76.0076e-830.2264
POPM GUHHZ1.2432e-51.8396e-61.2701e-63.5338e-71.6753e-72.8061e-59.5288e-62.3745e-74.0071e-834.8138
POPM GUHHN1.8163e-53.0046e-62.0956e-65.7064e-72.4129e-75.1503e-58.3391e-63.4625e-77.1637e-834.8138
POPM GUHHE1.6267e-52.7647e-61.9832e-67.8059e-73.9834e-74.5142e-51.6348e-55.9841e-78.9374e-834.8138
CME ITHNZ5.4829e-66.7809e-75.5992e-73.6487e-71.8161e-79.6255e-63.1648e-62.6526e-72.3294e-838.9202
CME ITHNN5.4594e-68.8453e-77.3705e-73.9562e-71.9564e-71.5074e-54.2737e-62.5671e-72.2207e-838.9202
CME ITHNE6.5832e-69.3082e-77.3595e-72.8993e-71.8152e-71.2722e-54.1429e-62.1330e-72.5543e-838.9202
MAIM GUHHZ2.4340e-64.3100e-72.3434e-71.1920e-75.7451e-88.0017e-61.0645e-68.2160e-89.0838e-940.6179
MAIM GUHHN5.4952e-66.7911e-74.3365e-71.4577e-77.1268e-81.2947e-52.0640e-61.2533e-71.6707e-840.6179
MAIM GUHHE3.3668e-67.4561e-75.2550e-72.5172e-79.1660e-81.1720e-52.8162e-61.1693e-71.6653e-840.6179
ZCCA IVHHZ2.5233e-63.6401e-73.6966e-71.5852e-78.1873e-84.4719e-63.2427e-61.1791e-71.0346e-842.276
ZCCA IVHHN2.5023e-65.1321e-75.4444e-73.8221e-71.3509e-73.3018e-63.6467e-61.5723e-71.6678e-842.276
ZCCA IVHHE2.1825e-67.7128e-77.4330e-75.2031e-72.0181e-73.1533e-65.1788e-62.7829e-72.8940e-842.276
GRAM GUHHZ6.7792e-69.9453e-75.5487e-71.6398e-76.8125e-89.5203e-63.1789e-69.6601e-82.2503e-842.9308
GRAM GUHHN5.4749e-61.1627e-61.1923e-64.4286e-71.8108e-71.2195e-58.4086e-62.4865e-73.2546e-842.9308
GRAM GUHHE5.9720e-61.9514e-61.6831e-65.7812e-72.5151e-71.2086e-51.1722e-53.5363e-75.3371e-842.9308
PLMA IVHHZ3.7499e-63.2620e-71.5241e-79.8338e-88.1595e-84.9386e-66.2994e-71.2139e-78.8009e-956.3245
PLMA IVHHN4.7980e-65.5447e-73.3612e-72.0420e-71.4443e-71.3232e-51.7263e-61.9114e-71.5931e-856.3245
PLMA IVHHE3.8375e-64.2571e-72.0895e-71.4168e-71.1040e-77.4391e-69.8020e-71.5229e-71.1415e-856.3245
PII IVHHZ1.9146e-63.6523e-72.8913e-79.8507e-83.8149e-85.7985e-61.1929e-65.4389e-89.8347e-961.4177
PII IVHHN2.3804e-66.7404e-74.3075e-71.7448e-76.2914e-81.0202e-51.9066e-69.0342e-81.6265e-861.4177
PII IVHHE2.8556e-65.1733e-73.7819e-71.0608e-75.4937e-86.6896e-61.9291e-67.6453e-81.2802e-861.4177
SEI IVHHZ1.1304e-62.9224e-72.9322e-71.2689e-75.1897e-82.3533e-61.9952e-66.2764e-88.7706e-974.7108
SEI IVHHN1.8670e-64.6723e-74.6283e-73.4048e-71.6659e-74.7144e-62.3184e-62.0670e-71.7249e-874.7108
SEI IVHHE2.4049e-63.7318e-72.8487e-72.0850e-71.0206e-72.8726e-61.8112e-61.2369e-71.3157e-874.7108
MSSA IVHHZ7.0833e-71.1471e-77.8919e-83.9991e-82.9922e-82.0993e-63.8219e-74.2474e-82.9651e-977.6275
MSSA IVHHN6.6578e-71.3513e-71.1373e-75.2924e-82.7747e-82.3530e-64.8525e-73.5203e-83.5439e-977.6275
MSSA IVHHE5.0645e-71.2250e-79.6660e-85.8735e-83.4960e-81.6037e-64.0768e-74.2367e-83.9794e-977.6275
*IH (Housner Intensity) calculated on the velocity spectrum (SV) between 0.1 and 0.5 s (IH0), 0.1 and 1.0 s (IH1), 0.1 and 1.5 s (IH2)

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